How did the Treaty of Guadalupe Hidalgo contribute to US expansion?

The Treaty of Guadalupe Hidalgo ended the Mexican-American War in 1848 and transferred a large area of land from Mexico to the United States. In return, the US paid Mexico $15 million, so the treaty expanded US territory through the purchase and cession of land. The correct choice is “The US paid Mexico $15 million for the ceded land.”

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